Function run_with_merged_args 

pub fn run_with_merged_args<A, F>(
    setup_fn: F,
) -> Result<Context, Box<dyn Error>>
where
    A: Args + Serialize + DeserializeOwned + Default,
    F: Fn(&mut Context, RunnerArgs<A>) -> Result<(), IxaError>,

Runs a simulation with merged base and custom arguments from CLI and config.

Values in args from the JSON config override defaults. Explicit CLI flags override config values. Custom config values are read from args.custom. Custom merging supports top-level serde fields whose names match clap arg IDs. A field whose serde name differs from its clap arg id (e.g. via #[serde(rename)] or #[serde(flatten)]) can still be set from the config, but an explicit CLI value for it cannot be detected, so the config value takes precedence for that field. config itself is CLI-only and is not read from the config file.

Custom args are merged by round-tripping through JSON, so custom path arguments given on the command line must be valid UTF-8. Base path arguments (--config, --output) have no such restriction.

Errors

Returns an error if config merging or the setup function fails. Invalid command line arguments print an error and exit the process.